Pendant switch.



J. G. PETERSON.

PENDANT SWITCH.

APPLIGATIONHLBD JAN. 5, 1909.

937,857. Patented Oct. 26, 1909.

U N1 TED STATES PATENT OFFICE.

JOHANN Gr. PETERSON, 0F HARTFORD, CONNECTICUT, ASSIGNOR TO THE ARROWELECTRIC COMPANY, NECTICUT.

or HARTroRD, CONNECTICUT; A l'CORPORATION or CON- PENDANT SWITCH.

Specification of Letters Patent.

Patented Oct. 26, 1909.

Application iled J'anuar'y 5,1909. Serial No'. 470,771.

To all whomit may concem:

- Be it known that I, JOHANN GODFREY I E- TER'soN, a citizen of theUnited States, residing at Hartford, in the county of Hartford and Stateof Connecticut, have invented a new and usefulPendant Switch, of whichthe following is a speciiication.

This invention relates to oscillating snap push button electric switchesand more particularly to that class of such switches which are known aspendant switches, that is, switches which are attached to flexible andswinging electric circuit wires for the purpose of turning on and offcurrent for one or more electric lamps'or fans that are out of reach.

The object of the invention is to provide a mechanism for such switcheswhich will operate easily, quickly and safely for opening and vclosingan electric circuit; which mechanism has few parts, all of which areexceedingly cheap to manufacture and simple to assemble.

The invention is illustrated in the accompanying drawings as embodied intwo forms of a pendant switch, one having two push buttons in theend'and the other having one push button in the end and the other in theside.

Figure l of the drawings shows on natural scale an'end view of the firstform of pendant switch mentioned, without the exterior shell.

Fig. 2 shows on like scale a side elevationl view looking at one sideofthe switch mechanism of the lirst form of switch above mentioned. Fig.4 shows a view on the same scale of the other side of the said switchmechanism. Fig. 5 shows a sectional View of .the switch mechanism. Fig.6 shows a plan of the switch mechanism. `F ig. 7 shows an edge view.Fig. 8 shows on natural scale a view of the underside of the receptaclefor this switch mechanism; and Fig. 9 shows on enlarged scale, a sideelevation of the switch mechanism arranged for the second mentioned formof pendant switch, that is, the form which has one button extendingthough the end and the other through the s1 e.

The cylindrical pendent receptacle l, which is illustrated, may be madeof porcelain or other suitable insulating material. This receptacle isdesigned to be inclosed in a metallic shell of usual' shape, which isnot shown, as it forms no part ofthe present invention.

In both forms of switch illustrated th mechanism supporting frame isstamped from a single piece of metal with'sides 2 joined by an end 3.lLugs 4 project outwardly from the upper edges of the sides of theframe. `These lugs have threaded perforations 5 .for receiving thescrews 6 which pass through the end of the receptacle and secure theframe in the interior.

An arbor 7 is mounted in the sides of the frame, and pivotally mountedon this arbor are a pair of arms 8 to which the push buttons 9 areconnected by fingers 10. In the formof switch having two buttonsprojecting through the end of the receptacle, 4the lingers are attachedto two lugs 11, which project edgewise from one of the arms, as shown inFig. 5, while in the form which has one button projecting through theside of the receptacle, the finger connected with the j lbreakconnection with the contacts 15 projecting from the plates 16 which aresecured to the end of the receptacle fand are provided with screws 17for the attachment of the circuit wires. The contact plateis insulatedfrom the end of the yoke and the studs 18 which securel it thereto, byinsulating washers 19.

Pivotally supported by the yoke near its swinging end is a bar 20 fromwhich ex. tends a rod 21 that passes freely through a plate 22 that ispivotally supported by the forked ends of the arms. A spiral spring 23thrusts between the bar carried by the yoke and the 'plate carried bythe arms.

A sheet of insulating material 24 is placed over the open end of thereceptacle. This insulating sheet is preferably held in place by nuts 25turned upon the screws 26, which are employed to hold the fixed contactplates in position.

When one of the buttons is pushed inward, the armsare rocked in suchmanner that they cause the spring to be compressed until the ends of thearms pass the longitudinal axis of the yoke, at which time the tensionof the spring throws, the yoke and changes the posltion of the contactbrushes. The action is exactly the same 1n both cases,

`that is, whether both of the buttons project through thel end ofthereceptacle or one button projects through the end of the receptacle andthe other through the side.

The invention claimed is:

1. An electric switch having an insulating receptacle, a frame securedin the receptacle, an arbor supported by the frame, a pair of armspivotally mounted parallel with each other on the arbor, push buttonsthat extend through the wall of the receptacle connected with andadapted to oscillate said arms, a yoke having its two 4arms pivoted onthe said arbor, contact brushes connected with but insulated from theswinging neck of the yoke, a spiral spring having one end connected withthe arms relatively near the arbor, and the other end connected with theyoke relatively distant from the arbor, whereby the movement of the armsfirst compresses the spring and then allows the spring to expand andthrow the yoke and brushes, and contacts fixed to the receptacle andadapted to be connected by the brushes.

2. An electric switch having an insulating receptacle, a frame securedin the receptac'le, an arbor supported by the' frame, a pair of armspivotally mounted parallel with each other on the arbor, push buttonsthat extend through the wall of the receptacle connected with andadapted to oselllate said arms, a yoke havingits two arms arborsupported by the frame, a rocker pivl otally mounted on the arbor, pushbuttons connected with and adapted to oscillate the rocker armsprojecting parallel with'each other from the rocker, a yoke having itstwo arms pivoted on the said arbor, a contact connected with, butinsulated from the swinging neck of the yoke, a spiral spring havingconnected with the yoke relatively distant from the arbor, whereby themovement of the arms rst compresses the spring,and then, as the s rin.is carried between the one end connected with the arms relatively nearthe arbor, and the other end' arms of the yo e, a lows the spring tothrowthe yoke and contact, and a contact fixed to the receptacle andadapted to be lengaged by the contact carried bythe yoke.

JOHANN lor. PETERSON.,

Witnesses: J OSEPHINE M. STREMPFER,

HARRY R. WILLIAMS.

